447981 has 8 divisors (see below), whose sum is σ = 616704. Its totient is φ = 288960.

The previous prime is 447961. The next prime is 447983. The reversal of 447981 is 189744.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 447981 - 2¹⁴ = 431597 is a prime.

It is a super-2 number, since 2×447981² = 401373952722, which contains 22 as substring.

447981 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 447981.

It is not an unprimeable number, because it can be changed into a prime (447983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2316 + ... + 2501.

It is an arithmetic number, because the mean of its divisors is an integer number (77088).

2⁴⁴⁷⁹⁸¹ is an apocalyptic number.

It is an amenable number.

447981 is a deficient number, since it is larger than the sum of its proper divisors (168723).

447981 is a wasteful number, since it uses less digits than its factorization.

447981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4851.

The product of its digits is 8064, while the sum is 33.

The square root of 447981 is about 669.3138277370. The cubic root of 447981 is about 76.5161655786.

It can be divided in two parts, 4479 and 81, that added together give a triangular number (4560 = T₉₅).

The spelling of 447981 in words is "four hundred forty-seven thousand, nine hundred eighty-one".